No music... just claps, stomps, tap, beatbox, and dance. It's pretty amazing how they've choreographed and combined movement and sound.

I believe the beatboxer from Japan, Reo Matsumoto, that I saw performing in the subway today was/is a part of this performance group. Check out one of his subway performances here. From what I saw of his sign, he does it to share the art with us. That's a beautiful thing...